Hi m8. I have the 2 builds. First one is my main level 265, second build was sorc necro1 I abandon.
I tell yiu what is my experience with both builds.
1- This one is very balanced and playabe until rank7. Rank 8 I dont know how it will be yet. Sorc is OP in rank 5, yo can solo grind spots like Demon Prison and Dina Bee Farm and gain silver. Rank 6 is still better because of Ride. But a Temple Shooter has to be your priority.
Warlock is very good in Rank 7. Normally im second on dps on bosses in siaulai mission.
The big problem, and will be worst in the future is sp managment. With a passive of Sorc you can recover your sp in the time the Cat needs to buff you. The problem is in rank 7 Im out of sp in 2 or 4 min. The more the level of the maps the more HP mobs have and more sp I have to use to kill them.
When IMC fix the Link+Magic Missiles will be worst.
For me is very unpleasant that I have to sit every 2 min to replace sp. Thats why I soloed all the way to rank7, around level 240, and later I started to search for groups and dont solo at all. Is not only that I have to regenerate SP, also HP, higher mobs hit very hard.
So in rank8 my conclusion is that I will waste more SP than in rank 7 but Sorcerer Summon stills wasting the same absurd SP as rank 5. In parties for grind, I dont use Temple Shooter anymore. I play as support Linking mobs and doing a bit of DPS and buffing with cat. I like to do that support.
Of course you can still solo and use SP potions in rank 7-8 and drink them like water. Like one pot every min.
2-This build I played only to rank 6. I abandon it because I wassnt Wiz3, and cant use flesh cannon in a party due the long cast and interrupts. For Solo is better if you go Sorc1, Temple Shooter may do low damage but its usefull for take agro. If you are a person that dont like having to use consumables all the time and waste silver to be efficient this build is not for you. As Sorc Necro you waste same SP darin on Sorc pet, and have to buy Necro Corpse Pots.
About Necro, pets are useless in party. They tend to agro mobs that the party leave behind and they are more slow that you. So in a party a necro has to play a support Role, Linking mobs, use flesh cannon etc. So if you like the necro pets be aware that in a grinding party you wont be using it much.
In rank 8 necro3 gains good things. Pasive to increase your corpse managment. With that and level 1 spell Gather Corpse you can go and farm low level areas to have high amount of corpse. So in rank 8 corpse managment wont be a problem, and you will need less potions.
My final advice is, what do you like more? Like having dark pet and dark spells go for warlock. Like having undead pets, go for Necro. If you dont want to use pots all the time I suggest going a Support Necro, Wiz3, Link2, Necro3. This build is very SP friendly, and you only will have to use Corpse Pots (I mean, lots of them, If you use Flesh Cannon, like 1 every 30secs) until hit Rank 8.
Hope it helps, and sorry for the long post.